ARM: Kirkwood: Convert to pinctrl
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Cover letter [PATCH 0/9] ARM: Kirkwood: Convert to pinctrl
Dear Michael Walle,
Quoted 11 lines · Michael Walle
Am Donnerstag 25 Oktober 2012, 09:43:43 schrieb Thomas Petazzoni:
Quoted 3 lines
Regardless of those GPIOs, did you solve the hang that happened even when you removed the
gpio_set_value()calls? Or is it still a problem currently?quick update, i found out, that my board loops in the mvebu interrupt handler
mvebu_gpio_irq_handler(). maybe this is also the lockup Jamie Lentin sees.are interrupts always enabled, now? is there a way to control them? maybe there is something missing in the dts, now.
Ah, this is interesting. It is not entirely surprising, since the gpio driver is new. Even though it re-uses most of the previous gpio driver, it is by far not impossible that there will be a few regressions.
Could you add a few debug prints to see if you're looping *inside* the function (which I find pretty unlikely), or if the function gets called over and over again? Could it be that the hang occurs during the initialization of the gpio-leds or gpio-keys drivers?
Also, even though I'm pretty sure it isn't going to fix your problem, note the following mvebu-gpio fix:
http://article.gmane.org/gmane.linux.ports.arm.kernel/195018
Best regards,
Thomas
Signature · 4 lines
Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com